This post describes oil spill occurrence throughout California in 2008. Data is from the CA DFW Oil Spill Incident Tracking database
This project looks at oil spill occurrence and counts by county throughout California. The Office of Spill Prevention and Response (OSPR) Incident Tracking Database is responsible for tracking oil spills throughout the state. Oil spill presence data is collected by the OSPR Field and Response Team for oil spill in marine waters and the OSPR Inland Pollution Coordinators and Wardens for inland oil spills. First, the location of oil spills are identified throughout California and include inland, marine, and freshwater. Second, the counts of inland oil spills are identified by county.
Figure 1: Map of the locations of 2008 oil spills that occurred throughout California. Types include inland, marine, and fresh water spills. Most oil spills occured in marine and fresh water locations. Data Source: CA DFW Oil Spill Incident Tracking

Figure 2: Map of the occurrence of inland oil spills by California County. The highest occurrence of oil spills in 2008 occurred in Los Angeles County. There is no data for Modoc County, which is displayed in dark gray. Data Source: CA DFW Oil Spill Incident Tracking
CA DFW Oil Spill Incident Tracking